Selenium

 

History

(Gr. Selene, moon) Discovered by Berzelius in 1817, who found it associated with tellurium, named for the earth.

Uses

Selenium is used in Xerography for reproducing and copying documents, letters, etc. It is used by the glass industry to decolorize glass and to make ruby-colored glasses and enamels. It is also used as a photographic toner, and as an additive to stainless steel.

Cost

Selenium is priced at about $300/lb. It is alos available in high-purity form at a somewhat higher cost.

Isotopes

Naturally selenium contains six stable isotopes. Fifteen other isotopes have been characterized. The element is a member of the sulfur family and resembles sulfur both in its various forms and in its compounds.

 

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